when we used useeffect in react js code example
Example 1: useeffect react
useEffect(() => {
// code goes here
return () => {
// cleanup code codes here
};
},[]);
Example 2: how to use useeffect
import React, { useState, useEffect } from 'react';
function Example() {
const [count, setCount] = useState(0);
// Similar to componentDidMount and componentDidUpdate:
useEffect(() => {
// Update the document title using the browser API
document.title = `You clicked ${count} times`;
});
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}